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Question

Which molecule has a trigonal planar geometry?

A
IF3
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B
PCl3
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C
NH3
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D
BF3
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Solution

The correct option is D BF3
IF3 molecule is pyramidal in shape and is sp3 hybridised.

Structural formula

PCl3 molecule is pyramidal in shape and is sp3 hybridised.

Image result for pcl3 shape
NH3 molecule is pyramidal in shape and is sp3 hybridised.

Image result for nh3 molecule shape

BF3 molecule' is trigonal planar in geometry and is sp2 hybridised.

Image result for bf3 molecule shape

So, the answer is D.

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